Thread-waxing device for sewing-machines.



v @ga F, W. MERRICK.

THREAD WAXING DEVICE FOR SEWING MACHINES; 1

MPLmATIoN HLED Nov.1o, 1908.

mammoet. 19,1909.

nnrrasrarns PATENT orion.

FRANK W. MERRIOK, 0F BOSTON, MASSACHUSETTS, ASSIGNOR TO UNION LOCK STITCH COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

THREAD-WAXING DEVICE FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application filed November 10, 1908. Serial No. 461,846.

To all w71 omy it may concern:

lle it known that I, FRANK. W Mannion, a citizen oi the United States, residing at. Boston, in the county ot' Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Thread-faxing Devices for Sewing-Machines, of which the following is a specification, reference being had therein ,to the accompanying drawings. i

The' main object of the invention is to provide a wax-stripper which shall be so constructed as to enable the socket containing` the rubber (caoutchouc) or other packing material to be opened up in such manner as to enable such material to be conveniently, quickly, and entirely removed andtresh material introduced, whenever it becomes necessary te make the change.

The invention consists in a wax-stripper comprising a socket within which the packing material is confined both radially and longitudinally, the said socket being longitudinally divided to form segn'iental sections, and means for etlecting relative adjustment of the socket-sections longitudinally oi the socket to thereby vary the dematerial. The said socket is preferably, though not necessarily in all embodiments oll the broad principles of the invention, separable laterally to open up the chamber of the" socket. v

The invention consists, also, in a swinging arm in connection with the wax-pot, carrying a guide for the thread and movable to depress the said guide and thread into the depth of the wax-pot, or elevate them therefrom, the said. arm having a tubular heat'- conducting and radiating shell inclosing the path of thek thread intermediate the said thread-guide and the wax-stripper, the said shell serving to radiate heat upon the portion of waxed thread extending from the thread-guide to the stripper to keep the wax thereon ,from cooling. YVith the saidmovable arm I combine means forlocking itin thedesired position. Usually, although not necessarily in all fornisof the invention, mount the wax-stripper upon the said arm so that it shall occupy the same position with relation to the passage through the tubular shell in all positions of the arm.

This enables threading-up to be effectedv conveniently and quickly when the arm has grec oil the compression of the said packing been swung so as to raise the `guide out of the contents ofthe wax-pot, by nieanso' a wire passed through the VYtix-stripper and the said passage.

An embodiment of the invention is shown in the drawings, in which latten- Figure l is a view in vertical longitudinal section of a wax-pot having one form of my improvements applied thereto. Fig. 2 is an end elevation of the said wax-pot.

Fig 3 is a detail view showing aportion of the swinging arm, the stripper applied thereto, and a portion of the support for the said arm. Fig. 4 isa View showing the parts of Fig. 3 in longitudinal transverse section. Fig. 5 is a view in cross-section on line 5, `5, of Fig. 3.

Having reference to the drawings,-at l is a wax-pot, it being suitably constructed for application and attachment to the supporting-'frame on which it is mounted for use. At 2 is the thread to be operated upon, 3 being a thread-guide and' tension-device at the enterin side of the wax-pot, l the thread-guide y which the thread is depressed in the lower portion oflthe interior of the wax-pot so as to pass into and through the contents of the latter, 5 a threadguide at the delivery-side ofthe wax-pot, 6 an additional4 thread-guide by which the thread is conducted toward the place of use, and 7 a metal tube, connected with the body of the wax-pot, and inclosing a portion of the path of the thread on the way fromthe wax-pot.. `The tube 7 is slitted lengthwise at 7a, to permit the thread to bepassed by a lateral movement into the tube, or to be Withdrawn. from the latter. It becomes warmed from its connection with the metal body of the wax-pot, and not'only protects the thread from cooling influences, 'but by radiation of heat keeps the thread warm.

The-thread-guides 4, 5, and 6 are shown as l pressed position of the arm,

the said liig. This mode arm enables it to be swung. up so as to raise its lower end and the thread-guide 4 out of the wax-pot 'for convenience in threadgn up. For the purpose of locking the arm 1n the depressed working position Vshown in Fig. 1, a clamping-screw 8k is provided, the said clamping-screw. `havin'g its threaded stem fitted to a threaded hole that is tapped through a lug 8m of the arm 8. In the dethestem of the screw occupies an open-topped slot in the ear 8 rising from the top of the wax-pot. B y turning the screw this 'ear may be clam ed' between the lug 8ln and the collar 8 utp the screw, (shown by vdotted lines inf' Fig. 1) which will hold the arm from rising.i

'When the screw is loosened, the arm may be raised.

In conformitywith one featlirev of the in-v vention, the arm 8 1s provided 'wljth thetubular shell 8, eXtendin in the direction bf the path of the thread trom the thread-guide 4 to the-strip er. The said shell incloses lthe said path, 'rom near the thread-guide 4to near the stripper, and serves to protect the thread between the said thread-guide and the stripper from cooling influences. In ad; dition, the arm being formedl of metal', and being at its upperend in contact'with vthe wax-pot, the arm and ,its shell become warmed by conduction and radiate heat upon the inclosed portion of thread. In this form of the invention, theystripperv is provided' upon the arm 8, and one of the sections of the socket for the terial 9, Fig.l 2,- is integral withthe arm ltself, the other being ,constituted by a separate block 10.` The two sections are formed to' inclose between them the chamber which receives the packing or stripping material.` See Fig. 5.' The line of division between-the sections extends longitudinally of the socldet, and i the sections havelongitudinally-extending meeting-faces 8b, 10", at opposite si esof the chamber. End-walls are provide Ifor the chamber. In this form ofthe invention, also, one of the said end-walls, it being designated 8, is formed upon the section which is integral with the arm, and the other, 10, upon the movable section l0. The packing or stripping material 9 (usually rubber) is con-V fined radially by the side-walls of the vcham- "ber, and longitudinally by the end-Walls 8,

10c. Thread-passages-Sd, 10d, are Vprovided in the end-walls 8c, 10, in line `with the pas-' sage within the shell 8, and a central threadpassage is provided through the packing or stripping material, as usual. It will be 0bvious that when relative movement of the sections longitudinally of thestripper-socket takes place, so as to vary the distance be tween the end-Walls, the degree of the compression of the packing or stripping material within the chamber, and thereby the of mounting the 1 action upon the thread passin packing or stripping mathrough the stri per, will be corres onding y varied.

T e section, 10 is he d in of a bolt l1. The stem of this bolt occupies a holethat is bored longitudinally through the body of the said section, as shown best in Figs. 4 and 5. A shoulder at 1lan uponthe bolt bears against one end of section 10. Adjacent to the said shoulder, the lbolt is fitted to a bearing that is provided therefor in a lug 8p projecting from arm 8. The screwthreaded portion of the stem of the bolt projecting beyond"\.the opposite end of he sectionlO is 1n screwlthreaded engageiike. the other section, namely by being fitted to a screw-threaded hole whi'ch ,isl tapped' in a secondI lug, 81, projecting from the arm.

,Bolt 11 extends parallel withthe'meetingfaces 8b, 10b, ofvthe sections, means of retaining the sections closed together in working l producing relative'ymovement ofthe sections longitudinally .'of. the socket in efectin ad` justmentsfor regulating the action 'o -the stripper, and as a guide for the section 10 -in being adjusted. moved, 1t constituting a, movable retainer by which they parts-arevheld in their normal working ,relations, 'the' ysection l0 may be separatedbodily by a ilateral movement from the companion section,

the chamber completely so as to expose the packing or stripping material for ready removal. V

I claim as my invention s* i 1. In combination, a stripper-socket longitudinallyvdivided intosegmental sections permitting the sam'e -to vbe opened apart laterally, packing material wit 1in the said socket, and means for effecting adjustment of the socket-sections relative to each other `longitudinall of the socket to thereby vary the degree o compression of the said packing material.

- 2. In combination,

a socket longitudinallyhaving opposite endwalls upon different sections thereof, thel said' end-walls having thread-passages, packing material confined within the said socket, ,and means for eli'ect-` ing adjustment of the sections relative to each other ongitudinally of the socketjto vary the degree of compression of the said packing material. I f A 3. In combination, a stripper-sock t longitudinally-divided. into' mentalf sections permitting the same tof laterally, and within which 'so'cket the packing material is,confined, the packing. ma-,1 pressure adjusting means' terial itself, and

longitudinally of the socket whereby terial may be varie twith" thereby opening u p actirg the egree of com ression of the said Inaand serves as a When' the bolt 1I is rel' e'| opened apart lace by means i relations, as a meansof,

`11 divided into segmental sections permitting the -"same to be opened apart laterally, and y 4. In combination, a'str-ipper-sock'et longi- 13.0

' and 4securing tudinally divided into segmental Asections permitting the same to be opened apart laterally, and one section of which is'longitudinally adjustable relative to the other to vary the degree of compression of the packing-material within such socket,and a removable retainer by which the sections are held in their normal working relations.

5. In combination, a stripper socket longitudinally divided into segmental sections permitting the same to be opened apart laterally, and having end-walls which are adjustable relative to each other to vary the compression of packing-material within the socket, and said packing-material itself.

6. In combination, a stripper-socket longitudinallydivided into segmental sections comprising a fixed section and a. longitudinally-movable section, and an adjusting guide-bolt by which the movable section is removably held in place.

7 In combination, a stripper-socket longitudinally-divided into segmental sections. packing within the said socket, and a retains ing and adjusting bolt engaging the sections them together in working relations, the said bolt being in screw-threaded engagement with one of said sections, whereby, by turning the bolt the sections are relatively adjusted longitudinally and the de'- gree of compression of the packing is regulated, and by disengagement of the bolt the sections are free to be separated.

8. In combination, a stripper-socket longitudinally divided into segmental sections comprising a fixed section and a transversely-removable section which is relatively movable upon said fixed section longitudinally ofthe socket, and a retaining and adjusting bolt, turning in bearings 1n the two sections, shouldered for engagement with one thereof, and in screw-threaded engagement with the other thereof.

9. In combination, /a wa`X-pot, a waxstripper, and a swinging arm carrying. a thread-guide and movable to depress such thread-guide into the depth of the wax-pot or elevate it therefrom, the said arm having l in connection therewith a heat-conducting and radiating shell inclosing the path of the thread intermediate the said thread-guide and the wax-stripper', whereby heat is radiated upon the portion of thread extending from the former to the latter.

10. In combination, a waX -pot, and a swinging arm carrying a thread-guide and a wax-stripper and provided with a heat-conducting and radiating shell inclosing the path of the thread intermediate the said thread guide and the -waX stripper, the swinging movement` of the arm serving to depress the threadguide into the wax-pot or elevate it therefrom.

1l. In combination, a lwaXpot, a waxstripper, a swinging arm carrying a threaduide and movable to depress guide into the depth of the wax-pot or elevate it therefrom, the said arm having in connection therewith a heat-conducting and radiating shell inclosing theI path of the thread intermediate the said thread-guide and the wax-stripper, whereby heat is radiated upon the portionof thread extending from the former to the latter, and means for locking the said arm in its working position.

l2. In combination, a wax-pot, a swinging arm carrying `a thread-guide and a waxstripper and provided with a heat-conducting and radiating shell inclosing the path of the thread intermediate the said threadguide and the wax-stripper, the swinging movement of the arm serving to depress the thread-guide into the wax-pot or elevate ittherefrom, and means for locking the said arm in its working position.

13. In combination, a wax-pot, and an arm hinged thereto carrying a thread-guide and a wax-stripper and adapted to swing to depress the thread-guide into the wax-pot or elevate it therefrom.

Intestimony whereof I affix my signature in presence of two witnesses.

FRANK W. MERRICK.

IVitnesses:

CHAs. F. RANDALL, EDITH J. ANDERSON.

such thread- 

